YANG Jing,LU Yefeng,SUN Kaiwen,et al.Soil Nutrient in Secondary Salinization and Soluble Salt Vertical Distribution[J].Northern Horticulture,2016,40(23):171-174.[doi:10.11937/bfyy.201623040]
次生盐渍化土壤养分及可溶性盐垂直分布
- Title:
- Soil Nutrient in Secondary Salinization and Soluble Salt Vertical Distribution
- Keywords:
- secondary salinization; nutrient; soluble salts; vertical distribution
- 文献标志码:
- A
- 摘要:
- 土壤次生盐渍化问题日益严重，对农业发展构成严重威胁。以大棚蔬菜土壤为试材，采用田间取样分析方法，研究了次生盐渍化土壤养分、可溶性盐含量、组成及其垂直分布特点。结果表明：次生盐渍化土壤养分主要集中在土壤表层0～10 cm处，随着土层的加深,有机质呈先下降后增加的趋势，速效氮、速效磷、速效钾含量呈递减趋势；可溶性盐含量随土壤深度的增加呈下降趋势，表层（0～10 cm）含量最高，10 cm以下各土层可溶性盐分含量显著减少；表层土壤（0～10 cm）可溶性盐分离子主要为Ca2+ 和NO3-，分别占阳离子总量的59.71%和阴离子总量65.95%。
- Abstract:
- The problem of soil secondary salinization is getting worse，seriously threatening the development of agriculture.Greenhouse vegetables soil was used as test materials，field sampling was carried out，in combination with analytical methods，the content and composition of nutrient sand soluble salts was determined，as well as their vertical distribution characteristics in soils with secondary salinization.The results showed that the nutrient in secondary salinized soils mainly concentrated in the 0-10 cm surface layer.With the decrease of soil depth，the organic matter first increased and then decreased，while available N，P and K showed a tendency of decrease.Similar pattern was observed for soluble salts which decreased along soil depth，with the highest soluble salt content detected in surface layer(0-10 cm)，followed by a significant decrease from 10 cm downwards.Ca2+ and NO3-were the major soluble salt ions in the surface layer，accounting for 59.71% of the total cations and 65.95% of the anions respectively.
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备注/Memo
第一作者简介：杨静（1992-），女，硕士研究生，研究方向为农业资源利用。E-mail:1018836042@qq.com. 责任作者：盛海君（1966-），女，硕士，高级农艺师，研究方向为有机固废资源化利用与植物营养。E-mail:hjsheng@yzu.edu.cn. 基金项目：江苏省农业三新工程资助项目（SXGC[2016]327）；江苏省产学研前瞻性联合研究资助项目（BY2015061-05）。